blender.org website, aliasing

Hello everybody,

I noticed since several months that blender.org website has aliasing on the images.
Here a screenshot (look at the logo and the head of agent 327 for example):
https://screenshots.firefoxusercontent.com/images/2f61b3f0-21f0-481d-98cb-8b8f37b97b4a.png?download=Screenshot-2017-9-2%20blender%20org%20-%20Home%20of%20the%20Blender%20project%20-%20Free%20and%20Open%203D%20Creation%20Software.png&sig=ivxNhhUumZs8YA8u8mEn1XY7Qyo

Of course the zoom level is 100%.
I’m using firefox, and the problem appears with both version 55 and 57.

Do you have the same problem?